CN111442375B - Ceiling type air conditioner indoor unit - Google Patents
Ceiling type air conditioner indoor unit Download PDFInfo
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- CN111442375B CN111442375B CN201910045453.9A CN201910045453A CN111442375B CN 111442375 B CN111442375 B CN 111442375B CN 201910045453 A CN201910045453 A CN 201910045453A CN 111442375 B CN111442375 B CN 111442375B
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 17
- 239000002344 surface layer Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 6
- 238000007664 blowing Methods 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a ceiling type air conditioner indoor unit, which comprises a shell, wherein the bottom of the shell is provided with an air inlet, and the side part of the shell is provided with at least one air supply outlet; the heat exchanger is arranged in the shell; the rotation axis of the laminar flow fan is vertically arranged in the shell in an extending way, and laminar flow wind is generated by utilizing the viscous effect of air during the operation of the laminar flow fan so as to promote indoor air to enter the shell from the air inlet and flow to the air supply outlet after exchanging heat with the heat exchanger; and the flow guide piece can be rotatably arranged at the air inlet around a vertically extending axis and is used for guiding indoor air to flow to the air inlet through a gap between the outer peripheral surface of the flow guide piece and the bottom surface of the shell, and the flow guide piece drives the indoor air to enter the air inlet in an accelerating manner by utilizing the viscous effect of surface layer air on the outer peripheral surface when being driven to rotate.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to a ceiling type air conditioner indoor unit.
Background
Conventional household air conditioners are typically cabinet or on-hook. Indoor units of cabinet air conditioners and on-hook units typically have only one supply air outlet to supply air to the room. In addition, the cabinet machine and the hanging machine are limited by the structure, the air can be supplied in only one direction, and the air supply direction is single.
In addition, although the air guide plate and the swing blade are used for guiding air, the air supply range of the traditional cabinet air conditioner or the conventional on-hook air conditioner is still not large.
Disclosure of Invention
One object of the present invention is to provide an indoor unit of an air conditioner capable of multi-angle and omni-directional air supply.
Another object of the present invention is to provide a ceiling type air conditioner indoor unit with less noise and higher air volume.
Another object of the present invention is to stabilize the flow pattern of the inlet air flow of the indoor unit of a ceiling type air conditioner, reduce the eddy current loss to make the inlet air smoother, reduce the wind resistance, and beautify the bottom appearance of the indoor unit of a ceiling type air conditioner.
In particular, the present invention provides a ceiling type air conditioner indoor unit, comprising:
the bottom of the shell is provided with an air inlet, and the side part of the shell is provided with at least one air supply outlet;
the heat exchanger is arranged in the shell;
the laminar flow fan is arranged in the shell in a manner that the rotation axis of the laminar flow fan vertically extends, and laminar flow wind is generated by utilizing the viscous effect of air during the operation of the laminar flow fan so as to promote indoor air to enter the shell from the air inlet, exchange heat with the heat exchanger and then be blown back to the indoor space through the air supply outlet; and
the flow guide piece can be rotatably arranged at the air inlet around a vertically extending axis and is used for guiding indoor air to flow to the air inlet through a gap between the outer peripheral surface of the flow guide piece and the bottom surface of the shell, and the flow guide piece drives the indoor air to enter the air inlet in an accelerating manner by utilizing the viscous effect of surface layer air on the outer peripheral surface when being driven to rotate.
Optionally, the outer circumferential surface of the flow guiding member is a tapered guiding surface which is gradually expanded outwards from top to bottom in the radial direction and is used for guiding the air to gradually flow upwards in a deflected manner so as to enter the air inlet.
Optionally, the flow guide comprises: a circular top wall; and a peripheral wall extending downward from the peripheral edge of the top wall and radially outward, the outer surface of the peripheral wall constituting a tapered guide surface.
Optionally, the bottom wall of the housing around the air inlet is a flow guide surface extending radially outward from the edge of the air inlet and gradually extending downward, so as to define an air duct for the indoor air to enter the housing together with the conical guide surface.
Optionally, the projection of the flow guide member on the horizontal plane covers the projection of the air inlet on the horizontal plane, so that the flow guide member blocks the air inlet.
Optionally, the laminar flow fan comprises: the annular disks are arranged in parallel at intervals and fixedly connected with each other, and the axes of the annular disks extend vertically and are collinear; the circular disk is coaxially arranged above the uppermost annular disk with the plurality of annular disks, is arranged at intervals and is fixedly connected with the uppermost annular disk, and the center of the circular disk is sunken downwards to form an accommodating cavity; and the motor is positioned in the accommodating cavity, the top of the motor is fixed on the shell, the bottom of the motor extends out of the rotating shaft which is connected with the circular disk to drive the circular disk to rotate, so that the plurality of annular disks are driven to rotate, and an air boundary layer close to the surface of the annular disks is driven by the annular disks to rotate from inside to outside due to the viscous effect to form laminar air.
Optionally, the top of the diversion member is fixedly connected to the lower side of the circular disk to rotate synchronously with the circular disk under the driving of the circular disk.
Alternatively, for any adjacent two annular disks, the inner circle diameter of the annular disk located on the upper side is smaller than the inner circle diameter of the annular disk located on the lower side.
Alternatively, the casing may be rectangular as a whole, and four side portions thereof may have one air supply opening, respectively.
Optionally, the heat exchanger is between the laminar flow fan and the supply air outlet and surrounds the laminar flow fan.
The ceiling type air conditioner indoor unit is hung on a roof, the air inlet is positioned at the bottom, and the air supply outlet is positioned at the side. So, can set up a plurality of supply-air outlets at the lateral part, a plurality of supply-air outlets are towards different directions, can accomplish two sides air-out, trilateral air-out, four sides air-out and 360 all-round air supplies of circumference even, and the air supply scope is very big.
Furthermore, the fan adopted by the ceiling type air conditioner indoor unit is a laminar flow fan. Laminar flow fan is axial air inlet, radial air-out structure, just with the bottom air inlet of suspension type air conditioning indoor set, and the wind path trend phase-match of lateral part air-out combines very ingeniously. And, the indoor set of suspension type air conditioner sets up a plurality of supply-air outlets air-out simultaneously, and the noise problem is more outstanding, and laminar flow fan's own operation noise is less, can alleviate the noise problem of air conditioner complete machine to a certain extent.
Furthermore, in the ceiling type air conditioner indoor unit, the flow guide part is arranged below the air inlet at the bottom of the shell, so that air flows to the air inlet from a gap between the flow guide part and the shell. Compared with the scheme that the air directly enters the shell from the bottom of the shell upwards in some structures, the air guide piece is arranged, so that the air inlet direction is close to the horizontal direction, the air can enter the laminar flow fan more smoothly, and the energy consumption and the noise of the laminar flow fan are reduced.
Furthermore, in the rotating process of the flow guide piece, air on the surface layer of the outer peripheral surface of the flow guide piece can rotate along with the flow guide piece due to the viscous effect, and the air around the flow guide piece is driven to form a centrifugal trend so as to enter the shell at an accelerated speed, thereby assisting air inlet. Meanwhile, the device also has the functions of stabilizing the air inlet flow form and reducing the eddy loss. The flow guide piece also has the function of shielding the air inlet, so that the bottom appearance (the bottom of the ceiling type indoor unit mainly faces a user) of the ceiling type indoor unit is more attractive, and the influence of a complex air inlet grille arranged at the bottom of the shell on the appearance is avoided.
Furthermore, for any two adjacent annular disks, the diameter of the inner circle of the annular disk positioned on the upper side is smaller than that of the inner circle of the annular disk positioned on the lower side, so that air flows to each annular disk more uniformly and smoothly, the air quantity is increased, and the operation efficiency of the fan is improved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic view illustrating a ceiling type air conditioner indoor unit according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of the ceiling type indoor unit of the air conditioner shown in fig. 1, cut away in a vertical cross-sectional view;
FIG. 3 is a bottom perspective view of a laminar flow fan;
FIG. 4 is a schematic diagram of the air supply principle of the laminar flow fan;
FIG. 5 is a schematic cross-sectional view of a plurality of annular disks of a laminar flow fan;
FIG. 6 is a schematic view of the air circulation of a laminar flow fan according to one embodiment of the present invention;
FIG. 7 is a schematic view of the air circulation of a laminar flow fan according to another embodiment of the present invention;
FIG. 8 is a schematic diagram showing the relationship between the gradual change of the pitch of a plurality of annular disks and the air volume and the air pressure of the laminar flow fan.
Detailed Description
A ceiling type air conditioning indoor unit according to an embodiment of the present invention will be described with reference to fig. 1 to 8. Where the orientations or positional relationships indicated by the terms "front," "back," "upper," "lower," "top," "bottom," "inner," "outer," "lateral," and the like are based on the orientations or positional relationships shown in the drawings, the description is for convenience only and to simplify the description, and no indication or suggestion is made that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
The ceiling type air conditioner indoor unit and the air conditioner outdoor unit (not shown) of the embodiment of the invention form a vapor compression refrigeration cycle system together, so that the indoor environment can be cooled/heated.
Fig. 1 is a schematic view illustrating a ceiling type air conditioner indoor unit according to an embodiment of the present invention; fig. 2 is a cross-sectional view of the ceiling type indoor unit of the air conditioner shown in fig. 1, which is cut in a vertical cross-sectional view.
As shown in fig. 1 and 2, a ceiling type air conditioning indoor unit according to an embodiment of the present invention may generally include a case 100, a heat exchanger 400, a laminar flow fan 300, and a guide 200.
The ceiling type air conditioning indoor unit is integrally suspended below an indoor roof, and the top of the casing 100 is used for being connected with the roof. The housing 100 has an air inlet 110 at the bottom and at least one air blowing opening 120 at the side. The number of the blowing ports 120 may be one or more. For example, if the indoor unit is installed on a roof near a side wall, only one air supply opening may be provided. If the side wall is kept away from to the mounted position of this indoor set, if set up in roof central authorities, can set up like a plurality of air supply outlets towards the diverse such as 2, 3, 4 to realize multi-angle air supply effects such as two-sided air-out, trilateral air-out, four sides air-out. As shown in fig. 1, the casing 100 is rectangular as a whole, and four side portions of the casing 100 are respectively provided with one air blowing port 120 to realize air blowing in four directions. Even, the casing 100 may be circular, and the air outlets may be formed at all circumferential angles for air outlet, so as to realize 360 ° all-directional air supply. In addition, because of the higher mounted position of the indoor unit of the ceiling type air conditioner, the air-out coverage range is also very large, the refrigerating/heating speed is favorably improved, and the user feels more comfortable.
Disposed within the housing 100 is a heat exchanger 400, which may be an evaporator of a vapor compression refrigeration cycle. When the air conditioner is turned on, indoor air enters the casing 100 from the air inlet 110, flows through the heat exchanger 400, exchanges heat with the heat exchanger 400 to become heat-exchange air (the heat-exchange air is cold air during cooling, and the heat-exchange air is hot air during heating), and the heat-exchange air is blown back to the indoor space from the air supply outlet 120 to realize indoor cooling/heating.
A laminar flow fan 300 is disposed within the housing 100 for powering the airflow flow process described above. The rotation axis (x-axis) of the laminar flow fan 300 extends in the vertical direction (up-down direction), and generates laminar flow wind by the viscosity of air in operation. Laminar flow fan 300 is the axial air inlet, radial air-out structure. The bottom of the air intake unit is used for supplying air to absorb indoor air from the air intake opening 110, and the air intake unit is used for radially discharging air to blow air horizontally to the air discharge openings 120. Fig. 2 illustrates the air flow direction by arrows.
The ceiling type air conditioner indoor unit is provided with the plurality of air supply outlets 120 for simultaneously supplying air, so that the noise problem is more prominent, the running noise of the laminar flow fan 300 is smaller, and the noise problem of the whole air conditioner can be relieved to a certain degree.
In some embodiments, as shown in fig. 2, the heat exchanger 400 may be located between the laminar flow fan 300 and the supply air outlet 120 and surround the laminar flow fan 300, so that the airflow passes through the surface of the heat exchanger 400 more, and the heat exchange efficiency is improved. The specific shape of the heat exchanger 400 may be a ring shape (circle or square circle) to completely surround the fan 300, or may have an open "C" shape.
The guide member 200 is rotatably disposed at the inlet 110 about a vertically extending axis (x-axis) for guiding the indoor air to flow toward the inlet 110 through a gap between the outer circumferential surface of the guide member 200 and the bottom surface of the housing 100.
Compared with the scheme of enabling the wind to directly vertically enter the casing 100 from the bottom of the casing 100 upwards, the embodiment of the invention is provided with the flow guide member 200, so that the wind flows to the wind inlet 110 from the gap between the flow guide member 200 and the bottom surface of the casing 100, the wind inlet direction is close to the horizontal direction, the air can more smoothly enter the laminar flow fan (because the annular disk 10 of the laminar flow fan 300 horizontally extends), and the energy consumption and the noise of the laminar flow fan 300 are reduced.
In addition, the bottom appearance (the bottom mainly faces to users) of the ceiling type indoor unit is more attractive due to the arrangement of the flow guide piece 200, and the influence of complicated air inlet grille arranged at the bottom of the shell 100 on the appearance is avoided. In order to achieve better appearance beautifying effect, it is preferable that the projection of the diversion member 200 on the horizontal plane covers the projection of the air inlet 110 on the horizontal plane, so that the diversion member 200 can completely block the air inlet 110, and at least when a user is right under the indoor unit of the air conditioner, the user cannot observe the air inlet 110.
In the embodiment of the present invention, the guide member 200 is rotatable. When the guiding element 200 is driven to rotate, the air on the surface layer of the outer circumference surface thereof drives the surrounding air to form a centrifugal tendency due to the viscous effect, so as to accelerate the air to enter the casing 100. Meanwhile, the flow form of the air is more stable and the eddy loss is reduced due to the guidance of the flow guide member 200.
As shown in fig. 2, the outer peripheral surface of the baffle member 200 is a tapered guide surface 201 that is gradually enlarged outward in the radial direction (r direction) from top to bottom. After the indoor air enters the gap between the air guide member 200 and the housing 100 from the periphery of the air guide member 200, the indoor air is guided by the tapered guide surface 201 to gradually flow obliquely upwards so as to facilitate the indoor air to enter the air inlet 110. It will be appreciated that the generatrix of the conical guide surface 201 (i.e. the intersection with the section through the axis of rotation) need not be straight, but may be curved concavely at both ends compared to the middle as shown in fig. 2.
An alternative construction of the flow guide is described below. As shown in fig. 2, the baffle 200 includes a top wall 210 and a peripheral wall 220. The top wall 210 is circular. The peripheral wall 220 extends downwardly and radially outwardly from the periphery of the top wall 210. The outer surface of the peripheral wall 220 constitutes the aforementioned tapered guide surface 201. The generatrix of the conical guide surface 201 may be curved to facilitate smooth flow guidance.
In some embodiments, as shown in fig. 2, the bottom wall of the casing 100 around the intake vent 110 is a flow-guiding surface 140 extending radially outward from the edge of the intake vent 110 and gradually extending downward, and the flow-guiding surface 140 is generally ring-shaped. The guiding surface 140 and the tapered guiding surface 201 define an air channel for indoor air to enter the casing 100, and the air channel is similar to a volute of a centrifugal fan, so that the air inlet guiding function is enhanced, and the air suction efficiency of the laminar flow fan 300 is improved.
As shown in fig. 1, the flow guide member 200 is a solid of revolution as a whole, and has a circular bottom surface. The intake vent 110 is circular. The diversion member 200 and the air inlet 110 can be coaxially arranged, and the diameter of the periphery of the bottom end of the diversion member 200 is larger than that of the air inlet 110, so that the diversion length of the diversion member 200 is increased, and the diversion effect is ensured.
Fig. 3 is a bottom perspective view of a laminar flow fan. As shown in fig. 2 and 3, the laminar flow fan 300 may generally include a plurality of annular disks 10, a circular disk 30, and a motor 20.
The plurality of annular disks 10 are arranged in parallel at intervals, fixedly connected with each other, and have axes extending along the vertical direction and being collinear. The axis of the circular disk 30 is arranged above the uppermost annular disk in line with the plurality of annular disks 10, and is spaced apart from and fixedly connected to the uppermost annular disk. The center of the circular disk 30 is depressed downward to form a receiving chamber 31. A plurality of tie bars 40 may be provided to penetrate the circular disk 30 and the plurality of annular disks 10 to fix the plurality of annular disks 10 and the circular disk 30 together.
The motor 20 is located in the containing cavity 31, the top of the motor is fixed to the casing 100, and specifically, the motor can be fixed to the internal frame 150 of the casing 100, the bottom of the motor extends to form a rotating shaft 21, the rotating shaft 21 is connected to the circular disk 30 to drive the circular disk 30 to rotate, so as to drive the plurality of annular disks 10 to rotate, so that the air boundary layer near the surface of the annular disks 10 is driven by the annular disks 10 to rotate from inside to outside due to the viscous effect to form laminar air.
As shown in fig. 2, the top of the guide member 200 (i.e., the top wall 210 thereof) is fixedly connected to the lower side of the circular plate 30 to rotate synchronously with the circular plate 30. The air guide member 200 and the laminar flow fan 300 share the same motor, so that the rotation of the air guide member 200 does not need to be controlled independently, and the excessive space occupied by an additional motor is avoided.
Fig. 4 is a schematic diagram of the blowing principle of the laminar flow fan. As shown in fig. 4, the blowing principle of the laminar flow fan is mainly derived from a "tesla turbine" found in nigula tesla. Tesla turbines mainly utilize the 'laminar boundary layer effect' or 'viscous effect' of the fluid to achieve the purpose of doing work on 'turbine disks'. The laminar flow fan drives the circular discs 30 through the motor 20 to drive the plurality of annular discs 10 to rotate at a high speed, air in the intervals of the annular discs 10 contacts and moves mutually, and an air boundary layer 13 close to the surfaces of the annular discs 10 is driven by the rotating annular discs 10 to rotate and move from inside to outside under the action of viscous shearing force tau to form laminar flow wind.
FIG. 5 is a schematic cross-sectional view of a plurality of annular disks of a laminar flow fan; fig. 6 is a schematic view of the air circulation of a laminar flow fan according to an embodiment of the present invention.
As shown in fig. 5 and 6, an air inlet passage 11 is formed at the center of the annular disk 10 to allow external air to enter. A plurality of air outlets 12 are formed in gaps between the plurality of annular disks 10 to allow laminar air to be blown out. The process of the laminar wind formed by the air boundary layer 13 rotating from inside to outside is centrifugal motion, so that the speed of the laminar wind leaving the air outlet 12 is higher than that of the laminar wind entering the air inlet channel 11.
In some embodiments, for any adjacent two annular disks 10, the inner circle diameter of the annular disk 10 located on the upper side is smaller than the inner circle diameter of the annular disk 10 located on the lower side. In other words, the inner circle diameter of the annular disk 10 is gradually reduced in the direction in which the air flow flows in the intake air passage 11 (or from bottom to top). Therefore, when air enters the air inlet channel 11 from bottom to top, the air flows at different positions in the radial direction respectively correspond to different annular disks 10, so that the air can flow to the annular disks more uniformly, the air is prevented from entering the annular disk at the upper side difficultly, and the effect of improving the air volume is finally achieved.
FIG. 7 is a schematic view of the air circulation of a laminar flow fan according to another embodiment of the present invention; FIG. 8 is a schematic diagram showing the relationship between the gradual change of the pitch of a plurality of annular disks and the air volume and the air pressure of the laminar flow fan.
In other embodiments, as shown in fig. 7, the distance between two adjacent annular disks 10 may be gradually increased from bottom to top. Or, the distance between two adjacent annular disks 10 is gradually increased along the direction of the air flow in the air inlet channel 11. The inventor finds that the arrangement can effectively improve the air volume of the laminar flow fan through a plurality of experiments.
The variation of the interval between the adjacent two annular disks 10 can be made the same. For example, the distances between two adjacent annular disks 10 in the 8 annular disks 10 may be sequentially set from bottom to top as follows: 13.75mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm and 19.75mm, and the distance between two adjacent annular disks 10 is increased by 1mm from bottom to top.
In fig. 8, the abscissa axis shock uniform expansion Plate distance increment refers to the variation of the distance between two adjacent annular discs 10 along the direction from bottom to top, the left ordinate axis Mass flow rate refers to the air volume, the right ordinate axis Pressure refers to the air Pressure, and the air Pressure refers to the Pressure difference between the air outlet 12 of the laminar flow fan and the inlet of the air inlet channel 11. Also, the variation amount of the pitch between two adjacent annular disks 10 is the same, that is, the increase or decrease of the pitch between two adjacent annular disks 10 is the same.
Specifically, fig. 8 is a schematic diagram illustrating the relationship between the gradual change of the pitch of the plurality of ring disks 10 and the air volume and the air pressure when the outer diameter, the inner diameter, the number, the thickness of the ring disks 10 and the rotation speed of the motor 20 of the laminar flow fan are all kept constant. When all the above mentioned parameters are kept unchanged, in the plurality of annular disks 10, the distance between every two adjacent annular disks 10 gradually changes from bottom to top, which has a large influence on the air volume and a small influence on the air pressure. When the variation of the distance between two adjacent annular disks 10 along the direction from bottom to top, which is represented by the abscissa axis, is a positive number, it indicates that the distance between every two adjacent annular disks 10 in the plurality of annular disks 10 gradually increases from bottom to top; when the variation of the spacing between two adjacent annular disks 10 along the direction from bottom to top, which is represented by the abscissa axis, is a negative number, it indicates that the spacing between every two adjacent annular disks 10 in the plurality of annular disks 10 gradually decreases from bottom to top. As can be seen from fig. 8, when the variation of the distance between every two adjacent annular disks 10 in the plurality of annular disks 10 is-1 mm, 1mm and 2mm, the air volume and the air pressure of the laminar flow fan are both greatly improved. The air volume and the air pressure of the laminar flow fan are comprehensively considered, and the distance between every two adjacent annular disks 10 in the plurality of annular disks 10 is gradually increased from bottom to top. In an embodiment, the outer diameter of the ring disk 10 of the laminar flow fan is 175mm, the inner diameter of the ring disk 10 is 115mm, the number of the ring disks 10 is 8, the thickness of the ring disk 10 is 2mm, and the rotation speed of the motor 20 is 1000rpm (revolutions per minute), at this time, the air volume and the air pressure of the laminar flow fan are considered comprehensively, and the distance between two adjacent ring disks 10 in the 8 ring disks 10 can be set sequentially from bottom to top: 13.75mm, 14.75mm, 15.75mm, 16.75mm, 17.75mm, 18.75mm and 19.75mm, namely, the distance between two adjacent annular disks 10 increases by 1mm from bottom to top.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (9)
1. A ceiling type air conditioner indoor unit, comprising:
the bottom of the shell is provided with an air inlet, and the side part of the shell is provided with at least one air supply outlet;
a heat exchanger disposed within the housing;
the rotation axis of the laminar flow fan is vertically arranged in the shell in an extending mode, and laminar flow wind is generated by utilizing the viscous effect of air during operation of the laminar flow fan so as to promote indoor air to enter the shell from the air inlet, exchange heat with the heat exchanger and then blow back to the indoor through the air supply outlet; and
the flow guide piece is arranged at the air inlet in a rotating manner around a vertically extending axis and is used for guiding indoor air to flow to the air inlet through a gap between the outer peripheral surface of the flow guide piece and the bottom surface of the shell, and the flow guide piece drives the indoor air to accelerate to enter the air inlet by utilizing the viscous effect of surface layer air on the outer peripheral surface of the flow guide piece when being driven to rotate;
wherein the laminar flow fan comprises:
the annular disks are arranged in parallel at intervals and fixedly connected with each other, and the axes of the annular disks extend vertically and are collinear;
the circular disk is coaxially arranged above the uppermost annular disk and is fixedly connected with the uppermost annular disk at intervals, and the center of the circular disk is sunken downwards to form an accommodating cavity; and
and the motor is positioned in the accommodating cavity, the top of the motor is fixed on the shell, the bottom of the motor extends out of the rotating shaft, and the rotating shaft is connected with the circular disk to drive the circular disk to rotate, so that the plurality of annular disks are driven to rotate, and an air boundary layer close to the surface of the annular disk is driven by the annular disk to rotate from inside to outside due to a viscous effect to form laminar air.
2. The indoor unit of a ceiling type air conditioner as claimed in claim 1, wherein
The outer peripheral surface of the flow guide piece is a conical guide surface which is gradually expanded from top to bottom in the radial direction and is used for guiding air to gradually flow upwards in a deflected mode so as to enter the air inlet.
3. The ceiling type air conditioner indoor unit of claim 2, wherein the guide member comprises:
a circular top wall; and
a peripheral wall extending downwardly and radially outwardly from a peripheral edge of the top wall, an outer surface of the peripheral wall constituting the tapered guide surface.
4. The indoor unit of a ceiling type air conditioner as claimed in claim 2, wherein the indoor unit of a ceiling type air conditioner
The bottom wall of the shell around the air inlet is a drainage surface which extends from the edge of the air inlet radially outwards and gradually extends downwards, so that an air channel for indoor air to enter the shell is defined by the bottom wall and the conical guide surface.
5. The indoor unit of a ceiling type air conditioner as claimed in claim 1, wherein
The projection of the flow guide piece on the horizontal plane covers the projection of the air inlet on the horizontal plane, so that the flow guide piece can shield the air inlet.
6. The indoor unit of a ceiling type air conditioner as claimed in claim 1, wherein
The top of the flow guide piece is fixedly connected to the lower side of the circular disk so as to synchronously rotate with the circular disk under the driving of the circular disk.
7. The indoor unit of a ceiling type air conditioner as claimed in claim 1, wherein
For any adjacent two of the annular disks, the inner circle diameter of the annular disk located on the upper side is smaller than the inner circle diameter of the annular disk located on the lower side.
8. The indoor unit of a ceiling type air conditioner as claimed in claim 1, wherein
The whole body of the shell is rectangular, and the four side parts of the shell are respectively provided with the air supply outlet.
9. The indoor unit of a ceiling type air conditioner as claimed in claim 1, wherein
The heat exchanger is arranged between the laminar flow fan and the air supply outlet and surrounds the laminar flow fan.
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| CN201910045453.9A CN111442375B (en) | 2019-01-17 | 2019-01-17 | Ceiling type air conditioner indoor unit |
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| CN201910045453.9A CN111442375B (en) | 2019-01-17 | 2019-01-17 | Ceiling type air conditioner indoor unit |
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| CN111442375A CN111442375A (en) | 2020-07-24 |
| CN111442375B true CN111442375B (en) | 2021-09-21 |
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| JP6578907B2 (en) * | 2015-11-27 | 2019-09-25 | 株式会社富士通ゼネラル | Embedded ceiling air conditioner |
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| CN201539922U (en) * | 2009-09-15 | 2010-08-04 | 珠海格力电器股份有限公司 | Ceiling type air conditioner indoor unit |
| CN102588347A (en) * | 2011-01-10 | 2012-07-18 | 珠海格力电器股份有限公司 | Centrifugal fan and air conditioner comprising same |
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| CN111442375A (en) | 2020-07-24 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20210803 Address after: No.1 Gangcheng South Road, Jiangbei District, Chongqing, 400026 Applicant after: CHONGQING HAIER AIR-CONDITIONER Co.,Ltd. Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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